78851232 has 120 divisors (see below), whose sum is σ = 240124500. Its totient is φ = 25353216.

The previous prime is 78851231. The next prime is 78851233. The reversal of 78851232 is 23215887.

It is an interprime number because it is at equal distance from previous prime (78851231) and next prime (78851233).

It can be written as a sum of positive squares in 2 ways, for example, as 74028816 + 4822416 = 8604^2 + 2196^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (78851231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74644 + ... + 75692.

Almost surely, 2^78851232 is an apocalyptic number.

78851232 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78851232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120062250).

78851232 is an abundant number, since it is smaller than the sum of its proper divisors (161273268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78851232 is a wasteful number, since it uses less digits than its factorization.

78851232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1083 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 78851232 is about 8879.8216198300. The cubic root of 78851232 is about 428.8145317901.

It can be divided in two parts, 788512 and 32, that added together give a square (788544 = 888²).

The spelling of 78851232 in words is "seventy-eight million, eight hundred fifty-one thousand, two hundred thirty-two".